What is the difference between Dedicated Long-Code and Shared Long-code

Shared Long-Code is the common numberfor a group of people. For MSG91 the shared Long-Code is 9229224424. Using this number will be free of cost, you will be charged only for the incoming SMS. Incoming SMS is differentiated by keyword, and hence your keyword must be unique.

Dedicated Long-Code will be 10 digit mobile numberof your choice. There will be one time set-up cost for the new mobile number. Keyword can be of your choice as the incoming SMS are differentiated by the mobile number in this case.